Offensive coordinator Tim Beck said his unit has responded well this week after finishing last Saturday’s game against UCLA on a sour note.

The Huskers went without a touchdown after halftime against the Bruins. They couldn’t hide their disappointment after the game, and even during morning news conferences Monday, too. The loss hurt. Big time.

But so far, so good on the practice field this week. The players have moved on, according to Beck.

Said Beck after Tuesday’s practice: “I thought we had a very spirited practice. Very upbeat. Guys worked hard. I was pleased with our tempo and our (attention to) detail.”

>> Rex Burkhead update? Beck says ask the trainers. … Sophomores Ameer Abdullah and Braylon Heard did well in his place Saturday, Beck said.

>> Quarterback Taylor Martinez moved a little too fast as he tried to direct Nebraska’s offense late in the second half of that 36-30 loss to UCLA, according to Beck. Here’s what was missing, in Beck’s words: “Depth in his drops, his patience in the pocket, his ability to go from read to read, and not skip reads. He hurried himself back there.”

>> Sophomore Brion Carnes said he’s moved from quarterback to wide receiver this week. He’s also working on his ability to return punts. The position switch was Carnes’ idea, he said. “Anything to help the team.” (Carnes was not one of three Husker QBs who traveled to UCLA)

>> Looking back, Beck said UCLA’s defense had more overall speed than any Nebraska opponent over the last few years, except maybe South Carolina.

>> Arkansas State will blitz a lot, Beck said. He complimented the Red Wolves’ speed and aggressiveness. He also mentioned a defensive tackle — just not by name, though. Presumably, Beck’s talking about 6-foot-2, 310-pound junior Ryan Carrethers, who’s second on the team with 14 tackles.